Radiator valve



Aug 1, w33.,

W. B. MAC Kl NTOSH RADIATOR VALVE Filed May 19, 1930 A TTORNEY' YPatented Aug. l, 1933 Morice anotaron vALva William B. Mackintosh, Wabash, Ind., assigner to Minneapolis-Honeywell Regulator Company, Minneapolis, Minn., a Corporation of Delaware Application May 19, 1930. Serial No. 453,611

. 7 Claims. (Cl. 236-42) YThe present application relates, as indicated, to radiator valves, and more particularly to thermosensitive Valves for controlling the flow of a heating uid to a radiator. Theprimary object of the invention is to improve and simplify the construction of valves of this type, the improvementsin the present instance residing primarily in refinements of construction. Further objects of the invention will appeary as the description proceeds.

In the drawing Fig. l is a vertical sectional View through an embodiment of my invention;-

Fig. 2 is ajsection taken substantially upon the line 2-2 of Fig. 1; Y Fig. 3 is an end elevation of a block comprising an element of the disclosed valve; and

Fig. 4 is a sectional detail taken substantially upon the line 4-4 of Fig. 1.

Referring more particularly to the drawing, it Vwill be seen that the valve of the present application comprises a casing 1 of the ordinary angle type and having an externally threaded neck 2 with which is threadedly engaged a hub 3 having an inwardly extending annular flange 4 providing 1a swivel engagement' with a collar 5.Y Y A disc 6 is clamped to said 'collar 5, the outer end of said collar being'spun over said disc as atv 7`t0 hold the'same in place. v

Engagement of thev hub 3 with the neck 2 of neck and said collar 5 a'ring 8 to which is sealed one end of a bellows 9, the opposite end o'f'said bellows being sealed to a ring lrigidly secured to a'valve cup 11 carrying a valve head member 12 for cooperation with a seat 15 formedfin said casing 1. Said valve cup 11 is formed with a central threaded stud 14 on which is threadedly engaged a spider or guide 13 snugly slidable within the Voutlet port.

periphery of disc 6 by meansof screws 17 or other suitable fastening means, and has its cuter end closed fby adis'c 18 abutting an internal head 50 and secured in place by soldering or other means. An apertured plate 19is received in said shell in abutting relation with a second internal bead 20 and-,forms aretaining abutment for one end of a coil spring 21, said spring end being centered by means of a spring guide 22. The opposite end of said spring is received in a spring seat 23 mounted upon a plate 24 which plate sealsone end of a bellows 25, the opposite end of which is sealedy to an'annulus 26 located between said plate 19 and an internal rshoulder 51, formed incsaid shell the casing 1 clamps between the outer end `of said' Ashell 16 has its inner open end securedto ther 16. Preferably, said annulus 26 is soldered in place.

A projection 27, having internal threads 28, is secured to Valve cup 11 by means of lingers 27 projected through perforations in plate 10 and cup l1 and soldered in place. Y

A similar internally threaded projection 29 is secured to the forward face of the plate 24 by means of fingers 29 inserted through perforations 24 in said-plate and headed over, as shown. The threads of said projection 29 are kof the opposite hand with respect to the threads 28.

An adjusting stem is indicated generally at 30 and comprises a section 31 provided at its one end with a threaded head 52 for cooperation with the Y threads 28 of the projection 27 and at its opposite end with a reduced threaded extension 33; and a section 32 comprising a threaded head 53 for cooperation with the threads of the rprojection 29 and a' reduced threaded extension 34. As will be obvious, the threads of the head 53 are ofthe opposite hand with respect to the threads ofthe head 52. n Y

A gear 35 is formed with a bore 54 threaded for the reception of projections 33 and 34 and is conveniently soldered or welded to the stem sections 81 and 32 after the initial assembly, the4 parts being made in threepieces for convenience ofl manufacture.

The shell 16 isfformed with a slot 36 in its periphery and the disc 6' and plate 19 are formed with shallow registering radial slots or notches 56 and 37 respectively, for the reception of a pivot pin 39 on which is mounted an actuating lever 38. A plate 40 partially covers the slot 36 but permits oscillation of thev lever V38 about its axis. The

vouter end of the lever 38 is formed as a hand grasp, while the inner end thereof is formed as a gear sector having teethy 57 meshing with the gear35. H

The closure plate 18 is centrally provided with a nipple 41 having a bore therethrough and formed with internal and external screw threads. A block 42 of insulating material is mounted on the outer end of the shell 16 and, as is shown most clearly in Figs. -1V and 3, the inner face of said vblock is castellated or formed with a plurality of intersecting radial slots to permit air circulation between said block 42 and said plate 18. Said block 42 is formed with a bore shaped, at 58, to conform to said nipple 41, whereby said block is centered on said shell. A chamber '43 of annular form is mounted in embracing relation with a reduced extension 59 on said block 42 and is retained in place by a Y be closed, after charging by a screw plug 47. A

r convolution of the groove.

'- in place.

said chamber 46, the tube and the chamber,

43; and the bore of said nipple 41 Vis adapted to nut 48 threaded on the external threads of the nipple 41 retains the block 42 in place on said. shell k16. Y

The manner of mounting the container, 43 and the tube 45 is an important feature of the present invention. The end 62 of the tube is first positioned and soldered in place in the aperture in the plate 18. Thereafter, the tube end 61 is Vsecured in the aperture in the container 43 and,

said container nothaving been positioned on the projection 59, the tube 45 is laid in the convolutions of the groove 60. As such laying nears completion, the container 43 is drawn by the tube into proximity with the projection 59. The container 43 is now positioned on the projection 59, the end 61 of thetube falling into theislot 63 which, it

will be understood, hasa peripheral width materially'greater than the diameterof thetube 45. The screw 44 is now started in the vbore 64, but is not turned down onto the'container 43 until the latter has been rotated somewhat about its.

axis to tighten the tube 45 in its groove 60.

, While I have shown and described a slot 33 receiving the tube end 61, it will be'obvious that many of .the advantages of this arrangement could be attained byproviding in the-base of the container 43 a radial. groove of suilicient axial depth to accommodate the tube end 61,whereby rotation of the container 43 with respect to the block 42 would be permitted.

Anothermanner in which the ,parte of the device may be assembled is as follows.: The end 61A of the tube 45 is solderedin place inthe aperture in the container` 43; '.The container 43 is then mounted on the projection 59, and the screw 44 is turned down to clamp the container Thetube 45 is then,wrapped about the block 42, being'receive'd inthe groove 60,.th'e length of said tube being such as to provide a portion 4 to 6 inches long projecting from the iinal This portion lis iriserted between the castellations of the block 42 and, said block not having been mountedon the she11`16, the end 62 of the tube is solderedin place in the openingrin the plate 18.' Thereafter, the block 42-is rpositioned on theend of the shell 16, the slack of the tube 45 being received between said block and the plate 18,'. and said block is secured in place by the nut 48.. Y

In operation, the valve casing 1 being connected in thesuppIy line to a radiator, the operating handle 38 is oscillated about its pivot 39 to -a desired position, such oscillation rotating thestemv 30 through the coactionof the teeth 57 with'the gear 35. The threaded projections 27 and 29 being held against 'rotationQsuch rotation of the member30 results in adjustment of the valve member 12 and the plate 24 with respect to each other, thereby adjusting the degree of.V compression-'oi'.,thespringfZl required to close the valve; If the temperature in the room in which the valve is' mounted is below that for Vwhich the mechanism is calibrated at the selected setting oi the handle 38, such setting of the handle 38 results in withdrawal of the valve 12 from its seat l5 through the action of the spring 21. Heating fluid thus flows to the radiator until the temperature of the room is brought to the desired value. Such increase in the temperature of the room results inthe expansion of the thermo-sensitive fluid in the chamber 46, tube 45 and chamber 43, whereby the bellows 25 is collapsed, overcoinig the tendency of the spring 21, and the valve 12 is moved to its seat 15 to stop ow of heating iluid to the radiator,

The most eiiicient thermo-responsive fluid for use in this device is a readily volatilized liquid, the gasfrom whichl ills chamber 46 and the major volumes of tube 45 and chamber 43, a small surplus of the liquid being maintained in charnber 43.

I claim as-my invention:

`1. 'In a'device of the class described, a valve casing providing an inlet, an outlet, and a valve seat therebetween, a valve in said casing for co operation with said seat, a stern having a threaded connection with said valve, a collapsibleand expansibie chamber, a bellows forming one wall of saidl chamber, a spring seat connected to said bellows, a'spring abutment stationarily mounted in said casing, said stem having a threaded connection with said kspring seat, a spring restricted between said spring' seat and said abutment, ine-ans for causing relative rotation between said stemand said valve and spring seat, a block of heat insulating vmaterial secured to said casing, a container mounted on the side or said block removed from said casing, and a tube providing communication between said container and said chamber. I

2; In a device of the class described, a valve ripherally spaced teeth on said stem intermediate its ends; a gear sector pivoted in said casing and meshingwithA said teeth for rotating said stem, and means forpreventing rotation of saidvalve and spring seat. y 3. In a device of the class described, a valve casing providing an inlet, an outlet, and a valve seat therebetween, a valve in said casing for'cooperation-with said seat, a stem section threadedly engaged, at its one end with said valve and formed at its ,opposite end with a reduced threaded extension, a collapsible and expansible chamber, a bellows forming one wall of said chamber, an internally threaded hub secured to said bellowsga stem section threadedly engaged, at its one end,v in saidA hub and formed at its opposite end with a reduced threaded extension, the brstmentioned threads on said second stem section being of the opposite hand from the first-mentioned threads on said first stem section, an internally threaded gear receiving said reduced threaded extensions, and a toothed member oscillably mounted in said casing and meshing with said gear 'for rotating said stem sections simultaneously. Y

4. Ina device of the classdescribed, a valve casing providing an inlet, an outlet, and a valve seat therebetween, a valve in said casing for cooperation with said seat, a stem on said valve, resilient means engaging said stem and urging said valve away from its seat, and means for moving said valve against the tendency of said spring, said last-mentioned means comprising a shell forming a chamber having its one end closed by a plate and its opposite end closed by a bellows engaging said stem, a block of heat insulating material mounted on said shell adjacent said plate, a container secured to the free face of said block, and a tube connected at its one end to said container and at its opposite end to said chamber, said tube having its intermediate portion wound about the surface of said block.

5. Thermo-responsive actuating means comprising a shell forming a' chamber having its one end closed by a bellows and its opposite end closed by a plate, a block of heat insulating material secured to the latter end of said shell and having between said block and said plate and entered in an aperture in said plate.

6. Thermo-responsive actuating means comprising ashell forming a chamber having its one end closed by a bellows and its opposite end closed by a plate, a block of heat insulating material formed with a central bore and having its one end face castellated, a projection on said plate and extending into said bore, means enterable in said bore for securing said block to said projection, an annular container rotatably mounted on the opposite end face of said block, means for clamping said container in place, a tube, said last-mentioned block face being formed with a segmental slot having a peripheral width materially greater than the diameter of said tube, said tube having its one end mounted in said slot and connected to said container, its intermediate portion wound about the periphery of said block, and its opposite end inserted between castellations of said block and received in an aperture in said plate.

, 7. Thermo-responsive actuating means comprising a shell forming a chamber having its one end closed by a bellows and its opposite end closed by a plate, a block of heat insulating material mounted on said shell and having its end adjacent said shell castellated, an annular container rotatably mounted on the opposite end face of said block, means for clamping said container in place, a tube, said last-mentioned block face being formed with a segmental slot having an axial depth slightly greater than the diameter of said tube and a peripheral width materially greater than the diameter of said tube, said tube having its one end mounted in said slot and connected to said container, its intermediate portion wound about the periphery of said block, and its opposite end inserted between castellations of said block and received in an aperture in said plate.

WILLIAM B. MACKINTOSH. 

